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Field Evaluation And Genetic Analysis Of {\It Heliothis\/} Spp. Resistance In Advanced Lanthanum Cotton Strains., Stephen James Stringer

LSU Historical Dissertations and Theses

Seventeen advanced La cotton breeding strains having Heliothis spp. resistance attributed to morphological characters and allelochemics were evaluated for field resistance and flowerbud gossypol content at Baton Rouge, LA. in 1982 and 1983. These experimental cottons averaged less than 50% of the Heliothis spp. larvae and feeding-damaged fruit of two cotton cultivars recommended for production in Louisiana. These strains also had at least 25% less feeding-damaged fruit and 15% fewer live Heliothis spp. larvae than two Heliothis spp. resistant cotton germplasm lines. Results suggested that high flowerbud gossypol pigment glandulosity, rather than flowerbud gossypol content per se, played an important …

Winter Food Habits Of Mink In Southern Louisiana, Andrew Jason Dolan

LSU Historical Dissertations and Theses

Mink food habits were determined by examining digestive tracts from animals trapped over four winters from forested wetland, crawfish farm, brackish marsh, fresh marsh, and ricefield habitats. In addition, an abdominal fat index was used to determine general body condition. Over all study areas, crawfish were the most important food items in mink diets, occurring in 64.6% of the tracts. Other major food groups - in order of decreasing frequencies of occurrence - were mammals, fishes, reptiles and amphibians, insects, and birds. Mink digestive tracts from the forested wetland habitat contained the greatest variety of food items. Forested wetland and …

Winter Food Habits Of Mink In Southern Louisiana, Andrew Jason Dolan

LSU Historical Dissertations and Theses

Mink food habits were determined by examining digestive tracts from animals trapped over four winters from forested wetland, crawfish farm, brackish marsh, fresh marsh, and ricefield habitats. In addition, an abdominal fat index was used to determine general body condition. Over all study areas, crawfish were the most important food items in mink diets, occurring in 64.6% of the tracts. Other major food groups - in order of decreasing frequencies of occurrence - were mammals, fishes, reptiles and amphibians, insects, and birds. Mink digestive tracts from the forested wetland habitat contained the greatest variety of food items. Forested wetland and …

Louisiana Agriculture Magazine, Summer 1986, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

Dynamics And Bioavailability Of Folates In Bovine Liver As A Function Of Processing And Frozen Storage (Folic Acid, Pteroylglutamates, Beef Liver)., Fadi Michael Aramouni

LSU Historical Dissertations and Theses

Raw, broiled and fried beef liver samples were stored at -20(DEGREES)C in either vacuum or air-saturated packages. At periods of 30, 60 and 90 days the folates were extracted and analyzed by reverse phase high performance liquid chromatography (HPLC). Tetrahydrofolic acid (THF), dihydrofolic acid (DHF), 5-CH(,3)-THF, 5-CHO-THF and pteroylglutamic acid (PGA) were identified and quantitated. Two major folate oxidation products, pterin-6-carboxylic acid (pt-6-COOH) and p-aminobenzoylglutamic acid (p-ABG) were also detected. The total folate content of beef liver was higher than previously reported. PGA was not found in any of the samples but a large peak corresponding to the retention time …

Facilitative And Inhibitory Interactions Among Estuarine Meiobenthic Harpacticoid Copepods (Commensalism, Benthos, Louisiana)., George Thomas Chandler Ii

LSU Historical Dissertations and Theses

In Louisiana, USA, marshes, the harpacticoid copepods Scottolana canadensis and Pseudostenhelia wellsi are community co-dominants with similar lifestyles. Scottolana canadensis is a semi-sessile burrow-dweller capable of subsurface suspension and deposit feeding. Pseudostenhelia wellsi is a semi-sessile tube-building copepod that continuously corkscrews back and forth within its tube and appears to graze on the inner tube walls. Monospecific patches of both species (250 (.) 5cm('-2)) were generated in laboratory microcosms to determine their effects on colonization by two completely errant, burrowing harpacticoids, Nitocra lacustris and Cletocamptus deitersi, that have similar foraging and burrowing behaviors and similar effects on sediment structure. Pseudostenhelia …

Improvement Of Rice Through Somaculture (Somaclonal Variation, Plant Histology, Cell Culture)., Cao Jun

LSU Historical Dissertations and Theses

Research was conducted to develop methods for improving rice through somaclonal variation using plant tissue culture techniques. Experiments were directed toward developing an efficient culture system by which plants could be efficiently regenerated in rice somaculture. Histological studies of the process of callus formation and plant regeneration were also carried out. Explant sources evaluated for their potential for callus induction and plant regeneration included seedling mesocotyl, root-tips, embryos from mature seeds, nodes, immature panicles, and mature panicles. Immature panicles gave the best callus induction and plant regeneration. It was determined that it was necessary to add 2,4-D to the medium …

Some Factors Associated With The Effectiveness Of The Agricultural Production Component In Areas Of Integrated Rural Development In Colombia As Perceived By Farmers (Crop Technology)., Luis Eduardo Chaves E.

LSU Historical Dissertations and Theses

This study was conducted in two Integrated Rural Development Districts in Colombia; South Tolima and Fusagasuga. Its specific objectives were: (1) To determine the extent to which: (a) the factors included in the agricultural production component of the DRI program (research, extension, credit, marketing), in addition to farmland and climate were limiting crop productivity; (b) the DRI program was effectively transferring crop technology; (c) farmers adopted recommended crop technology; (2) To determine: (a) some of the reasons that limited adoption of agricultural technology; (b) changes in crop production; (c) some relevant characteristics of the DRI credit and marketing programs; (d) …

Circadian Lipogenic Responses To Insulin And Prolactin., Anthony Henry Cincotta

LSU Historical Dissertations and Theses

Lipogenic responsiveness to insulin was investigated at different times of day in freshly isolated hepatocytes and in primary cultured hepatocytes of Syrian hamsters, Mesocricetus auratus held on 14 hour daily photoperiods (lights on: 08.00) by following (('14)C)acetate incorporation into total cell lipid. The influence of prolactin on lipogenesis was tested by adding the hormone in vivo and directly to primary cultured hepatocytes. The findings of these studies are unique in that they demonstrate important roles of temporal interaction between prolactin and insulin in regulation of lipogenesis in cultured hepatocytes. They are summarized as follows: (1) A circadian variation of lipogenesis …

Jurors' Decisions In A Simulated Trial Of The Pms Defense: Background Characteristics And Attitudes Toward Menstruation., Marjorie Carole Donohoe

LSU Historical Dissertations and Theses

This mock jury study assessed the feasibility of utilizing Premenstrual Syndrome (PMS) as a substantive defense in a capital case. One hundred-eighty mock jurors were asked to render judgments in identical cases of spouse murder with one of three defenses: (1) temporary insanity due to PMS; (2) temporary insanity with a reported history of psychiatric treatment; and (3) temporary insanity brought about by extreme emotional trauma. Results indicated that mock jurors rejected an insanity defense for the PMS defendant. Jurors were more willing to render an NGRI (Not Guilty by Reason of Insanity) verdict for the defendant with a documented …

Effect Of Water-Management On The Etiology And Epidemiology Of Rice Blast Caused By Pyricularia Oryzae Cav., Choong-Hoe Kim

LSU Historical Dissertations and Theses

This research was conducted to examine the nature of the difference in resistance to blast under different water-management systems. Two cultivars; M-201, susceptible, and Brazos, partially resistant to blast, grown in flooded and upland (unflooded) field plots were inoculated with race IH-1 of Pyricularia oryzae in 1984 and 1985. Final disease ratings on M-201 and Brazos averaged 77.6% and 39.8% under upland conditions and 1.1% and 0.1% under flooded conditions, respectively. When blasted plants in upland plots were flooded, the rate of blast development decreased on Brazos but changed little on M-201. No increase in disease was observed when flooded …

Cenobium 1986, Louisiana State University And Agricultural And Mechanical College, School Of Veterinary Medicine, Bridget Peterson, Suzanne Stalker

Cenobium Yearbook

Cenobium began publication in 1977 and continued through 1990. Produced by students, the yearbooks are a chronicle of the daily life and the special events experienced by veterinary students at the LSU School of Veterinary Medicine.

Dietary Calcium And Blood Pressure In National Health And Nutrition Examination Surveys I And Ii, Christopher Sempos, Richard Cooper, Mary Grace Kovar, Clifford Johnson, Terrence Drizd, Elizabeth Yetley

Faculty Publications

It has recently been reported that a low intake of calcium may be a risk factor for hypertension. In view of the contradictory results, even when the same survey data base has been used by different researchers, an in-depth analysis was undertaken of the data provided by the two cycles of the National Health and Nutrition Examination Survey (NHANES). Both surveys, conducted in consecutive 4-year intervals during the 1970s, were designed to examine representative samples of the U.S. civilian noninstitutionalized population. The overall descriptive findings in relation to mean blood pressure and calcium intake were virtually identical in the two …

Factors Related To Blood Pressure In A Biracial Adolescent Female Population, M. Liebman, L. F. Chopin, E. Carter, A. J. Clark, G. W. Disney, M. Hegsted, M. A. Kenney, Z. A. Kirmani, K. L. Koonce, M. K. Korslund

Faculty Publications

Blood pressure levels, anthropometric parameters, and dietary intakes were assessed in 1981 and 1983 in a population of black (n = 236) and white (n = 296) adolescent girls, aged 14 and 16 years in 1983. The 14-year-old black girls exhibited significantly higher mean systolic and diastolic blood pressures than whites in both years. Body weight and Quetelet index were more strongly associated with blood pressure than were height and triceps skinfold thickness. Correcting blood pressures for weight, Quetelet index, 2-year changes in height, and age at menarche decreased in each case (but did not negate) the observed race differences …

An Evaluation Of The Expanded Food And Nutrition Education Program, Orleans Parish, Louisiana, 1983-86., Bobby Hugh Fletcher

LSU Historical Dissertations and Theses

The primary objective of this study was to determine the extent to which dietary behavior changes were made by the EFNEP participants in Orleans Parish, Louisiana, and whether or not they were retained after they were graduated for six months but less than one year. Data were obtained by personal interviews conducted by paraprofessional nutrition aides on the 208 homemakers who participated in the EFNEP during 1983-86. The 24-hour dietary recall instrument was the basis upon which homemakers' diets were evaluated. The dependent variable in this study was the mean difference in dietary scores at three different points in time …

Development Of An Extruded Whole Cottonseed Product As A Bypass Protein Source For Lactating Dairy Cattle., Jana Allene Stutts

LSU Historical Dissertations and Theses

Whole cottonseed extruded at temperatures ((DEGREES)C) and rates (kg/hour) of 131, 314; 135, 182; 146, 195; and 156, 286 was evaluated for protein solubility, in vitro ammonia production, and in situ disappearance to estimate bypass protein potential. Whole cottonseed, soybean meal, corn gluten meal, and soybean meal and whole cottonseed heated for 4 hours at 127, 138, and 149(DEGREES)C were also evaluated for comparison. Solubility was determined by three methods: hot water-refluxed 1 hour; cold water-mixed 30 minutes; and cold water-homogenized 5 seconds. Ammonia production was measured after 2, 4, and 6 hour incubations. Disappearance of crude protein and dry …

The Effects Of Feeding Direct Solvent-Extracted Cottonseed Meal To Yearling Holstein Bulls On Growth Rate, Semen Quality, And Spermatogenesis., David A. Jimenez

LSU Historical Dissertations and Theses

A sensitive, rapid, and accurate method for extraction and analysis of gossypol in bovine plasma and tissue by high-performance liquid chromatography was developed. A three day old Guernsey bull calf absorbed gossypol after single oral dose of gossypol acetic acid in corn oil (5 mg/kg of body weight). Maximum level of plasma gossypol (5.5 ug/ml) was absorbed at 6 hours after treatment. Average gossypol recoveries from plasma and tissue samples spiked before extraction were 88.2% and 82.9%, respectively. Nine yearling Holstein bulls were used to evaluate the effect of feeding direct solvent-extracted cottonseed meal containing gossypol and soybean meal rations …

Evaluation Of Some Properties Of Sugarcane Using Four Selected Techniques (Nmr, Nir)., Claudio Bianor Sverzut

LSU Historical Dissertations and Theses

A study was undertaken to evaluate new methods for rapid estimation of sugar, fiber, and moisture contents as well as the biomass of sugarcane. The NIR method can analyze the samples for sugar, moisture, fiber, and Pol values in less than one minute. The microwave method can reduce the time necessary to perform sugar and moisture analysis using the press method from 48 hours to a few minutes. Gamma ray transmission can be used to estimate crop yield in the field, and NMR can be used to measure the moisture content of whole stalks of sugarcane if its accuracy is …

Tolerance, Bioenergetics And Biochemical Composition Of The Blue Crab, Callinectes Sapidus Rathbun, Exposed To The Water-Soluble Fraction Of South Louisiana Crude Oil., Shiao Yu Wang

LSU Historical Dissertations and Theses

The tolerance, bioenergetics, growth, molting frequency and biochemical composition of juvenile blue crabs, Callinectes sapidus, exposed to the water-soluble fraction of South Louisiana crude oil were determined during a 21-d exposure period. Blue crabs were highly tolerant to petroleum hydrocarbons; the LC50 was 3927 ppb on day 21. Rates of energy intake decreased with increasing hydrocarbon concentration. Although energy expenditure rates of crabs exposed to 2504 ppb were not significantly higher than that of control crabs, they were significantly higher than those of crabs exposed to 820 and 1476 ppb. The resulting decrease in scope for growth was thus due …

The Physiological Ecology Of A Migratory Noctuid Moth, The Velvetbean Caterpillar (Anticarsia Gemmatalis Hubner) (Density, Plant Age, Juvenile Hormone)., Howard William Fescemyer

LSU Historical Dissertations and Theses

Velvetbean caterpillars, Anticarsia gemmatalis Hubner, were reared at different densities on soybean. The degree of dark pigmen- tation was density-dependent under field and laboratory conditions. The highest degree of dark pigmentation was expressed in the last instar when larvae were crowded throughout development. Soybean plant age had no effect on the degree of dark pigmentation. Larval development was delayed and one-day-old adult weight was decreased as the larval density and plant age increased. Size and biochemical composition of one-day-old A. gemmatalis adults was investigated in relation to larval pigmentation, larval den- sity and plant age. Wet, dry and protein weights …

Charlotte Perkins Stetson Gilman, A Voice For Progress And Perfection: A Rhetorical Analysis Of Selected Addresses, 1883-1892., Stephen Robert Guempel

LSU Historical Dissertations and Theses

Amidst the social reform impulse of late nineteenth-century America, Charlotte Perkins Stetson--noted writer, lecturer, and social reformer--began her career as a spokeswoman for social justice. As such, she lectured to local religious groups, Nationalist clubs, women's clubs, and literary societies on a variety of subjects that included social ethics, family, motherhood, and art. In these many lectures and sermons, Stetson related her unyielding faith in and fervent expression of humanity's potential for perfectibility. This study analyzes six selected addresses delivered by Stetson between the years 1883 and 1892 in order to identify the rhetorical techniques she used to communicate her …

Water Quality Dynamics In Commercial Crawfish Ponds And Toxicity Of Selected Water Quality Variables To Procambarus Clarkii, Thomas Michael Hymel

LSU Historical Dissertations and Theses

Water quality in five southern Louisiana commercial crawfish (Procambarus clarkii and P. acutus acutus) ponds was monitored from November 1982 through May 1983. Two ponds were planted with rice (Oryza sativa) and three ponds had volunteer terrestrial and semi-aquatic vegetation as crawfish forage.

Water quality was poorest in November, April, and May when water temperatures exceeded 18"C. However, only dissolved oxygen (DO) attained concentrations low enough (<1.0 mg/liter) to be acutely toxic to crawfish. Free carbon dioxide (CO2) attained levels (12.0 mg/liter) that could potentially harm crawfish during periods of low DO (<2.0 mg/liter). The temperature, pH, free CO2, nitrate, total phosphorus, biochemical oxygen demand (BOD), chlorophyll a, total hardness, and total alkalinity did not differ significantly among rice ponds and ponds with volunteer vegetation. The DO, nitrite, total nitrogen, and chemical oxygen demand (COD) were highest in rice ponds (P<0.05). The soluble inorganic phosphorus (SIP) and conductivity were highest in ponds with volunteer vegetation (P<0.05).

Free CO2, SIP, conductivity, and total alkalinity levels were positively correlated with an increase in macrophytic biomass (P<0.10). Nitrite, total nitrogen, COD, BOD, turbidity, temperature and DO decreased with increased vegetative biomass. Crawfish catch was positively correlated with total ammonia, BOD, COD, and water temperature, and negatively correlated with total phosphorus, total nitrogen, SIP, total alkalinity, and DO.

The toxicity of hydroxyl and hydrogen ions (i.e., pH), ammonia, and nitrite to juvenile P. …

Louisiana Agriculture Magazine, Spring 1985, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

Modification Of Rice Flour And Its Potential Use In The Food Industry., Samir Sideek Alhusaini

LSU Historical Dissertations and Theses

Rice flour was modified with either 0.1, 1.0 and 5.0% acetic or succinic anhydride for 1, 6 and 18 hr under basic conditions. The pH was maintained above 7.0 using either sodium hydroxide or sodium carbonate. The results showed that modified rice flours had lower fat content as compared with the unmodified rice flour (control). The type of anhydride significantly influenced the fat content of rice flour. Ash content of rice flour increased significantly due to the anhydride concentrations and alkali type. Significant differences were also found in the protein content of modified rice flours due to the use of …

Metal Ion, Protein, Phytic Acid Interactions., Elaine Thompson Champagne

LSU Historical Dissertations and Theses

Insight into the mineral, protein, phytate relationships in rice bran was gained by examining the solubility behavior of these components. Solubility profiles of the phosphorus and nitrogen components as a function of pH did not correspond, except in the pH 1.0-2.0 range. This is evidence that association between protein and phytate only occurred in this low pH range. Potassium, magnesium, and calcium solubilities as a function of pH corresponded to those of the phytic acid salts of these minerals. Soluble magnesium and potassium phytates were isolated on Sephadex G-25-50 and identified by ICP, confirming their presence in rice bran. The …

The Biology Of Egg Production In The House Cricket, Acheta Domesticus L., Craig William Clifford

LSU Historical Dissertations and Theses

Oogenesis commenced on day 3 (day 0 = adult ecdysis) in Acheta domesticus L., which, based on degeneration of the flight muscles, was approximately when juvenile hormone was released. Starvation did not prevent the onset of oogenesis, although egg production was greatly reduced. Virgin females did not oviposit and the oviducts filled with eggs by day 15. Compaction appeared to be a factor limiting oogenesis. The digestive tract was compressed and feeding reduced, which might be the primary factors terminating oogenesis. The concentration of juvenile hormone esterase (JHE) did not change as virgins filled with eggs, which indicated that JHE …

In Vitro Culture And Non-Surgical Transfer Of Micromanipulated Bovine Embryos., Steven A. Voelkel

LSU Historical Dissertations and Theses

A total of 374 non-surgically recovered bovine embryos (EMB) was used to evaluate in vitro culture systems for micromanipulated (MICRO) EMB and to assess EMB development following various MICRO procedures. In Experiment I, viability at 12, 24, 36, 48, 60 and 72 h of culture of 39 demi-embryos (DE) in Ham's F-10 with 10% FCS (HF-10) was 43, 41, 33, 28, 21 and 18% compared with 69, 69, 69, 67, 62 and 62% for DE cocultured with bovine uterine fibroblasts (BUF) in HF-10. These results demonstrate the BUF coculture system's superiority to HF-10 for culturing bovine DE. Experiment II was …

Host Responses To The Phenolic-Glycolipid-1 Antigen Of Mycobacterium Leprae (Elisa, Leprosy, Epidemiology, Armadillo, Human)., Richard W. Truman

LSU Historical Dissertations and Theses

Antibody responses to the apparently species specific phenolic-glycolipid-1 (Phen-Gl-1) antigen of Mycobacterium leprae were examined in humans and armadillos using enzyme-linked immunosorbent assays (ELISA). Statistical definitions for the interpretation of positive and negative reactions were derived. A retrospective serological survey of armadillos indicated that leprosy in the wild armadillo is a naturally acquired zoonosis. Presently 12.5% of the armadillos in 2 parishes in south central Louisiana have detectable IgM antibodies to Phen-Gl-1. Approximately 2.7% of these histologically exhibit clinical disease. Antibodies were not detected in Florida armadillo sera. Variations in prevalence rates were noted, and may be due to environmental …

1. Determination Of Manganese In Biological Samples. 2. Studies Of The Effects Of Aluminum And Decaying Vegetation On Aquatic Life Exposed To Acidity., Paula Mayard Deano

LSU Historical Dissertations and Theses

Part One. Determination of Manganese in Sweat and Urine. A method has been developed for the direct determination of manganese in perspiration using graphite furnace atomic absorption spectroscopy. This method was applied to a study of manganese concentrations in perspiration and urine samples. Concentrations of manganese found in sweat were significantly higher than the concentrations in urine. Determination of the chemical form of manganese in sweat was attempted. Analysis of sweat using anodic stripping voltammetry strongly indicated that the manganese was organically bound. In addition the potential of interfacing liquid chromatography and inductively coupled plasma emission spectroscopy for the speciation …

Epidemiology And Economic Implications Of Anaplasmosis In Louisiana (Prevalence, Incidence)., Randall Scott Morley

LSU Historical Dissertations and Theses

The research consisted of a literature review of the epidemiology of anaplasmosis and a descriptive epidemiological study of anaplasmosis in the Red River Plains and Southeast areas of Louisiana. The prevalence of anaplasmosis assessed by indirect fluorescent antibody (IFA) testing of 11,085 serum samples that had been obtained from cattle located in the study areas was 7.8%. Beef cattle appeared to show a higher Anaplasma antibody prevalence than dairy cattle, that is 11.2% to 3.8%, respectively. Among breeds, the Angus and Angus-cross animals seemed to show an increased susceptibility to infection. The prevalence of infection in free-roaming deer was determined …